// 通用表单校验 // Logan.Li

export function isNotEmpty(value: unknown): boolean {
  if (value === null || value === undefined) return false;
  return String(value).trim().length > 0;
}

export function isValidPort(port: unknown): boolean {
  const n = Number(port);
  return Number.isInteger(n) && n > 0 && n <= 65535;
}

export function isValidIPv4(ip: string): boolean {
  const parts = ip.trim().split('.');
  if (parts.length !== 4) return false;
  return parts.every((p) => {
    const n = Number(p);
    return Number.isInteger(n) && n >= 0 && n <= 255 && String(n) === p;
  });
}

export function isValidHostname(host: string): boolean {
  const h = host.trim();
  if (!h) return false;
  return /^[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/.test(h);
}

export function isValidUrl(url: string): boolean {
  try {
    const u = new URL(url);
    return u.protocol === 'http:' || u.protocol === 'https:';
  } catch {
    return false;
  }
}

export function parsePortList(text: string): number[] {
  return text
    .split(',')
    .map((s) => parseInt(s.trim(), 10))
    .filter((n) => isValidPort(n));
}